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The maintenance of the refractory linings 
in boiler furnaces is one of industry's serious 
problems. Repairs to boiler furnace walls 
are made with "lost time expense" which is 
a constant worry to boiler plant engineers. 

A very important con- 
tributing factor in assur- 
ing long life and econom- 
ical upkeep in boiler fur- 
nace walls is the Norton 
silicon carbide, trade 
marked "Crystolon." 

Crystolon Brick are sil- 
icon carbide brick of the highest quality. 
They more than meet the stringent Grade A 
requirements of the American Refractories 
Institute. 

Crystolon Brick are made in all the 
standard sizes of the 9" series and are 
available for prompt shipment. 

The standard brick made up in accord- 
ance with the special Norton formula RC 
1129 have the following desirable charac- 
teristics which make them particularly 
suitable for use in boiler furnace walls: 

1. Crystolon Brick contain an extremely 
high percentage of highest quality silicon 
carbide. 

2. Crystolon Brick are remarkably true 
to size and shape thereby allowing installa- 
tion with face to face joint. 



Economical operation 
assured by the use of Crystolon 
Brick at the clinker line of coal 
fired boiler furnaces, in the 
bridge wall and front wall 




3. High refractoriness is a quality im- 
parted to the brick from the high quality 
silicon carbide used. 

4. Crystolon Brick have great strength 
at elevated temperatures and also have a 

remarkable resistance to 
abrasion. Likewise their 
resistance to spalling is 
greater than that of any 
other commercial refrac- 
tory material. 

5. The resistance of 
Crystolon Brick to both 
the chemical action and physical action of 
molten slag is one of the most important 
qualities. They resist the penetration of 
the slag because of their great density. 
Slag may adhere to the surface to a very 
limited degree but what does stick is very 
easily removed without harming the surface 
of the wall. In other words, the original 
surface of the brick is retained for a long 
time. 

It is not the first cost of a refractory brick 
that determines its value or indicates the 
wisdom of its use. Maintenance cost and 
lost time are the difficulties which must be 
overcome. Crystolon Brick will solve the 
maintenance problem. 

Along the clinker line and at those points 
where wear and tear are severe, Crystolon 






Brick will give long, economical service and 
will reduce maintenance time and expense. 

The severe wear and 
tear to boiler furnace lin- 
ings in plants which are 
run to high capacity can 
be resisted effectively 
only by the highest type 
of refractory brick. Crys- 
tolon (silicon carbide) 
Brick were developed 
especially to meet the 
requirements of this type 
of service. 

Crystolon Brick in- 
clude peculiar qualities 
which result in high re- 
sistance to abrasion and 
slag adhesion. By the 
use of Crystolon Brick, 
boilers can be run at 
higher ratings than would 
be possible with fireclay 
walls. 

To get the best results 
the number of rows of Crystolon Brick used 
should be sufficient to more than cover 









jndum Cement RA 

RC 1130 
arc i for laying up 

n Brick. Both Alun- 
dun. i mater 

order to meet 
the pref t md 

requirements 
indn 

B cse Norton cements 

are fine grained mixtures RA 
1018 posed essentially of 

1 alumina, trade marked 
"Alundum." RC 1130 is com- 
posed essentially of silicon car- 
trade marked " Crystoloi 
ace to face joints can be 
ssurcd by using either of these 



dations for a 



that portion of the wall which is in direct 
contact with the fuel. Five to six rows along 
the clinker line have in 
general been found satis- 
factory. The brick should 
be laid up with dipped 
joints so as to present a 
condition as close to face 
to face as is possible. 
They should be laid as 
stretchers being tied in 
occasionally with headers. 
Cement used should be 
mixed with water to the 
consistency of heavy 
cream and brick face 
dipped in the cement. 

Wherever the ordinary 
fireclay brick does not 
have refractory qualities 
sufficiently high to meet 
the conditions found in 
any type of furnace, Nor- 
ton Company should be 
consulted for recommen- 
super refractory brick to 



overcome the difficulties of the situation. 



Resistance type furnace at the Norton electric furnace 

plant in which silica sand and coke are converted into 

silicon carbide (Crystolon) 




Crystolon Brick at the clinker line in furnaces reduce 

maintenance cost because of their high refractoriness, 

resistance to slag penetration and to abrasion 



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Alundum Brick I fused alumina I ifi f/ie sides, back and 
crown of a ceramic kiln fire box 



Arc type furnace in the Norton electric furnace plant 
fusing bauxite into fused alumina {Alundum* 




Another Norton product is a fused 
alumina brick of high refractoriness pro- 
duced and sold under the trade name of 
"Alundum." 

Alundum Brick are used in furnace walls 
and as supports in combustion chambers of 
continuous furnaces and kilns particularly 
in the ceramic and enameling fields. These 
brick are available in all of the sizes of the 
standard 9" series and can be shipped 
promptly from stock. 

Typical examples of constructions where 
Alundum Brick should be used are the 
following: 

1. For piers or supports under muffles 
in enameling, annealing and other types of 
oil or gas fired furnaces. 

2. In kilns of the continuous type as 
Dressier, Holcroft and Robertson kilns. 

3. In fireboxes of periodic kilns and also 
in the kiln chambers of these kilns. 



4. RA 1048 is a brick mixture which 
provides a chemically stable, non-spalling 
brick which stands up under intermittent 
firing. 

Alundum Brick have high heat con- 
ductivity, are chemically inactive, show 
almost no electrical conductivity, and are 
highly refractory. 

These are composed principally of elec- 
trically fused alumina and are made up in 
shapes of the 9" series. They give the best 
service in furnaces and kilns of the con- 
tinuous type; especially in kilns where the 
heating cycle is slow and gradual; or in 
constructions which are kept pretty well 
up to heat over weekends or holidays. This 
is true in cases of coal, oil or gas fuel. For 
electrically heated installations they are 
excellent because alumina is a poor con- 
ductor of electricity even at elevated tem- 
peratures. 



Standard Shapes of Alundum and Crystolon Bricks 

of the complete 9 -inch series carried in stock 





No. 4 Key Brick 




End Skew 




No. 2 Arch Brick 





No. 3 Arch Brick 



No. 1 Neck Brick 





Split Brick 




No. 1 Wedge Brick 




No. 2 Wedge Brick 




h2 "^^ 9* 
No. 3 Wedge Brick 





No. 3 Neck Brick 




No. 3 Key Brick 





Side Skew 



No. 2 Key Brick 



Circle Brick 





Jamb Brick 



9-in, Straight 
9x4 »' 2 x2 V* in. 

Other Straights 

9 x6»/«x2Vi in. 

13 l / a x4V 2 r2V 8 in. 

Half Brick 

4«/ 2 x4y 2 x2 1 /, in. 



Small 9-ln. Brick 




24-in. Circle Brick 
24 in. inside diam., 33 in. 
outside diam. 12 to a circle. 
(8 41 in. -6V, in.) x 4V 2 in. 
x 2Vi in. 

3 6 -in. Circle Brick 
36 in. inside diam., 45 in. 
outside diam. 16 to a circle, 
(8U in. -6^ in.) x t>/i in. 

x 2V» in. 

4 8 -in. Circle Brick 
48 in. inside diam, 57 in. 
outside diam. 20 to a circle, 
(89? in. -7ft in.) x 4V, in. 
x 2Y t in. 



60 in. Circle Brick 
60 in. inside diam., 69 In. 
outside diam. 24 to a circle, 

(8*1 in. -7*/4 in.) x 4V, In. 
x 2 V, in. 

72-in. Circle Brick 
72 in. inside diam.. 81 in. 
outside diam. 28 to a circle. 
(9 in. -8 in.) x 4y, In. s 
2>/» in. 

8 4 -in. Circle Brick 
84 in. inside diam., 93 in. 
outside diam. 32 to a circle. 
(9^ in. -8^ in.) x 4y, In. 

x 2Vt in. 



9-ln. Straight Brick 



NOTE: An allowance of A In Is made in the brick di- 
mensions for joints. The dimension "X" varies with the 
different sixes of circles so that the given number of bricks 
win lay up without cutting. 



l 



Alundum and Crystclon Refractory Bricks 
Standard 9" Shapes 



TABLE OF WNCH WEDGE BRICK 



Standard 9" atraight 

Standard Split* 

No I Arch 

No 2 Arch 

No. 3 Arch 

No. I Wedge 

No. I Wedge 

No 3 Wedge 

Small 9" 

Soap 

Half Brick 

Checker 

2" Brick 

No. I Key 

No 2 Key 

No. 3 Key 

No 4 Key 

No. I Neck 

No 2 Neck 

No. 3 Neck 

Feather Edge 

Edge Skew 

End Skew 

Side Skew 

jamb Brick 

Circle Brick 



9x44*24" 

9x4^x(2H-2y 8 ") 

9 x 44* (24-1 M") 

9x 4'2X (24-1") 

9x4» 2 x(2H-n 8 ) 

9 x 44 x (24-1 4") 

9 x 4 4 x (3-2") 

9x 34x24" 

9x2), x2'/' 

4 | , x 4 i ., x 2 J ," 

9 x 2% * 2H" 

9x44*2" 

9 x (44-4") x 2 4" 

9 x (44-34") x 24" 

9 x (44-3") x 24" 

9x (44-2»/ 4 "')x24" 

9x44x34x24" Is" 

9x44x24* I ^* H" 

9x434 1 (24- V) 

9x44x(24-H") 

9x (44 x I 4")* 24" 

(9-63 /4 ") x 44x24" 

9x(44-2K")*24" 

9x44x24" 

24", 36". 48". 60". 72". 84" 



Alundum Bricka ere eitremely refractory and contain a high percental* of 
electrically (ueed alumina (aluminum oxide). The atandard 9 % 44 x 24" weigh a 
I I pound*. 

Cry at ©J on Bricka are extremely refractory and contain a high percentage of 

crystalline ailicon carbide The standard 9 ■ 4 ' £ i 2 ' - t weifhe 9 poundi 

TABLE OF 9-INCH ARCH BRICK 



Ineidc 




Shape* Required 




Diameter 


No. 3 
Arch 

19 


No. 2 
Arch 


No. 1 
Arch 


Straight 


Total 


ft 6 in ' 








19 


1 ' 


15 




27 


16 

1 " 9 - 

2 " ' 
2 ' 6 


4 30 
36 

34 
26 
19 
II 
4 


e 

23 
36 
S3 
66 
76 
76 




34 
36 
42 
49 


3 




57 


) '• h 




64 


4 • • 




72 


4 3" 








76 


4 6 






4 


60 










5 " 






76 
76 
76 
76 
76 
76 
76 
76 
76 
76 


II 
19 
27 
34 
42 
49 
57 
64 
72 
79 


67 


5 " 6 






95 


6 0" 






103 


6 " 6 " 






110 


7 ' *" 







116 


7 " 6 " 






125 


6 • " 






133 


8 " 6 " 






140 


9 "' " 






146 


9 " 6 " 






155 










10 " " 






76 
76 
76 
76 
76 


67 
94 

102 
109 
117 


163 


10 " 6 " 






170 


II " 






178 


1 1 " 6 " 






165 


12 '• - 






193 











TABLE OF 9-INCH WEDGE BRICK 



Inaide 




Shape* Required 




Diameter 


No. 2 | No. 1 
Wedge Wedge 


Straight 


Total 


2 ft 3 in 


57 
49 






57 


2 6 


1 1 




60 


3 


36 30 




66 


3 6 26 


50 
71 
91 
91 




76 


4 0" 12 




83 


4 " 6 " 






91 


5 " 




6 


99 


5 6 

6 0" 
6 6 




91 
91 
91 
91 
91 
91 
91 
91 
91 


15 
23 
30 
38 
45 
53 
60 
66 
76 


106 
114 
121 


7 " 

7 6" 

8 




129 

136 
144 


8 " 6 " 




151 


9 * " 




159 


9 6 




167 


10 " 




91 
91 
91 

91 
91 
91 
91 
91 
91 
91 


63 
91 
96 
106 
113 
121 
126 
136 
143 
151 


174 


10 " 6 " 




182 


110 




169 


|| - 6 




197 


12 " 




204 


12" " 6 " 
13 ft m 
13 6 




211 
219 
227 


14 " " 

14 6 




234 
242 


IS o 




91 

91 
91 
91 
91 
91 
91 


156 
166 
173 
161 
166 
196 
203 


249 


15 " 6 " 

16 " 

16 6 

17 " 
17 " 6 *■ 
16 " 




257 
264 
272 
279 
287 
294 



Inatda 


Shape* Required (Continued) 


Diameter 


No. 2 

W«4«. 


No. 1 
Wedge 


Straight 


Total 


t*"" 8 " 




91 
91 
91 
91 
91 
91 
91 
9t 
91 
91 
91 


211 
216 
226 
»3 
241 
246 
256 
263 
271 
278 
266 


302 


19 " ' 




309 


19 " 6 ' 

20 




317 
324 


20 " 6 




332 


21 " " 




339 


21 " 6 " 




347 


22 " 




354 


22 " 6 




362 


23 - " 




369 


23 ' 6 " 




377 


24 " " 




91 
91 
91 
91 
91 
91 
91 
91 


293 

301 
306 
316 
323 
331 
336 
346 


364 


24 " 6 ' 

25 " " 

25 ' 6 

26 " " 

26 ■' 6 

27 " " 


::::::: 


392 
399 
407 

414 
422 
429 


27 ■ 6 " 




437 





TABLE OF 9-INCH KEY BRICK 






IttaicW 


Shapea Required 


Diameter 


No. 4 

K^ 


No. 3 


No. 2 
K«y 


No. 1 
Koy 


Straight 


Total 


1 ft. 6 in. 

2 ■' ■ 

2 ' 6 ■ 

J " •■ 

3 " 6 ' 

4 •* " 


25 
16 
9 












13 
25 
36 

29 
21 
12 








29 








34 








36 




13 
25 
38 






42 








46 


4'6 








50 


5 " " 




5 


50 
57 
55 
50 
46 
42 
38 
34 
29 
25 
21 
17 
13 
9 
4 






55 


5 " 3 " 








57 


5 " 6 " 






4 
13 
21 
29 
36 
46 
55 
63 
71 
80 
86 
96 
105 
113 




59 


6 " " 








63 


6 '* 6 " 








67 


7 " '* 








71 


7 ■' 6 " 

8 0" 
8 " 6 " 
o ■' '* 








76 




60 




64 




66 


9 " 6 " 
10 ft. in. 








92 








97 


10 " 6 " 








101 


II " " 






105 


11 "6 *' 

12 " " 






109 
113 


12 ■' 6 ■ 








1(3 
113 
113 
113 
113 
113 


4 
9 
13 
17 
21 
25 


117 


13 " " 








122 


13 " 6 " 








126 


14 " " 








130 


14 " 6 " 








134 


15 " " 








136 


15 " 6 " 








113 
113 
113 
113 
113 
113 
113 
113 
113 
113 


30 
34 
36 
42 
46 
50 
55 
59 
63 
67 


143 


16 " " 








147 


16 " 6 " 

17 " " 








151 
155 


17 " 6 ■" 








159 


18 " " 

16 ' 6 " 








163 
166 


19 " " 








172 


19 " 6 " 








176 


20 " - 








160 


20 *" 6 " 








113 
113 
113 
113 
113 
113 
113 


71 
76 
60 
64 
66 
92 
97 


164 


21 •' " 








169 


21 " 6 " 








193 


22 " " 








197 


22 " 6 " 








201 


23 " - 








205 


23 ■ 6 ' 








210 


24 " " 








113 
IIS 

113 
113 
113 


101 
105 
109 
113 
117 


214 


24 " 6 " 








216 


25 " "' 








222 


25 ■ 6 - 








226 


26 " ■ 








230 


26 " 6 ■ 








113 
113 
113 
113 
113 
113 
113 
113 


122 
126 
130 

134 
136 
143 
147 

151 


235 


27 " " 








239 


27 '■ 6 " 








243 


28 ■* •' 








247 


28 " 6 " 








251 


29 " " 








256 


29 " 6 " 








260 


30 - - 








264 


30 " 6 " 








113 
113 
113 
1(3 
113 
113 
113 
113 
113 
113 


155 
159 
163 
166 
172 
176 
160 
164 
169 
193 


266 


31 " " 








272 


31 ■" 6 " 






276 


32 " " 








281 


32 " 6 ' 








265 


33 " " 








269 


33 - 6 ' 

34 " " 
34 " 6 ■ 








293 
297 
302 


35 •' " 








306 











TABLE OF STANDARD 9-INCH CIRCLE BRICK 



Inaide 






Shapea Required 






Diameter 


24-,nch 
Circle 


36-mch 
Circle 


46-iBca 
Cird. 


60-ioch 

C.rde 


72-inch 
Circle 


84-iocb 

Circle 


2 ft in 


12 
9 
6 
3 












2 " 3 " 


4 
8 

12 
16 
11 
7 
3 










2 " 6 " 








2 ' 9 " 










3 










3 • 3 " 


6 
It 
16 
20 
14 
9 
4 








3 ' 6 " 








3 * 9 








4 " " 








4 •' 3 " 


7 

13 
19 
24 
17 
II 

5 






4 *' 6 " 






4 ' 9 






5 0" 






5 3' 
5 6" 
5 9" 






6 

15 
22 
28 
21 

14 
7 




6 0" 




6 " 3 " 
6 " 6 "' 










6 

16 


6 ' 9 " 








24 


7 " - 








32 













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